Bump actions/checkout from 3 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
           target: ${{ matrix.target }}
           override: true
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
       - name: Check
         env:
           CARGO_BUILD_TARGET: ${{ matrix.target }}
@@ -70,7 +70,7 @@ jobs:
           target: ${{ matrix.target }}
           override: true
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install linker
         if: matrix.target == 'i686-unknown-linux-gnu'
         run: |
@@ -104,7 +104,7 @@ jobs:
           target: ${{ matrix.target }}
           override: true
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Check
         env:
           CARGO_BUILD_TARGET: ${{ matrix.target }}
@@ -125,7 +125,7 @@ jobs:
           target: ${{ matrix.target }}
           override: true
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install WasmTime
         run: |
           curl https://wasmtime.dev/install.sh -sSf | bash
@@ -146,6 +146,6 @@ jobs:
           toolchain: nightly
           override: true
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Test
         run: make test

.github/workflows/clippy.yml

@@ -13,7 +13,7 @@ jobs:
 
     runs-on: ${{ matrix.target }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable

.github/workflows/minver.yml

@@ -12,7 +12,7 @@ jobs:
     continue-on-error: true
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: nightly

.github/workflows/rustfmt.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable